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Finding the Fourth Proportional to 18,410.87, 27,608.09 and 6,715.88

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Solution

The fourth proportional to 18,410.87, 27,608.09 and 6,715.88 is: 10,070.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,410.87 : 27,608.09 = 6,715.88 : x
  2. Step 2: Convert to fraction form
    18,410.87/27,608.09 = 6,715.88/x
  3. Step 3: Cross multiply
    18,410.87x = 27,608.09 × 6,715.88
  4. Step 4: Simplify right side
    18,410.87x = 185,412,447.85
  5. Step 5: Solve for x
    x = 185,412,447.85/18,410.87
  6. Step 6: Final answer
    x = 10,070.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.